By David Stringer, Associated Press LONDON -- Pri

Prime Minister Gordon Brown's new government ordered the expulsion of four Russian diplomats Monday over the Kremlin's refusal to extradite the key suspect in the fatal poisoning of a former KGB spy - Britain's first use of the sanction in more than 10 years.

By Alex Rodriguez, Chicago Tribune Jun. 1--MOSCOW -- The former KGB agent wanted for the poisoning of Kremlin critic Alexander Litvinenko made a bold assertion Thursday, accusing the British intelligence community of involvement in Litvinenko's death.

By C.J. Chivers Alan Cowell contributed reporting from London.

MOSCOW. May 31 (Interfax) - Businessman Andrei Lugovoi has come up with three theories in the poisoning of former Federal Security Service (FSB) officer Alexander Litvinenko, viewing as the most likely Boris Berezovsky's involvement. "The third theory looks the most likely to me.